F E Musiek1, J A Baran. 1. Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756-0001, USA.
Abstract
OBJECTIVE: This study aimed to establish hit and false-positive rates for distortion product otoacoustic emissions (DPOAEs) using a commercial instrument. STUDY DESIGN: This was a prospective study. The examiners performing the DPOAEs were blinded to pure-tone audiometric results. A decision matrix analysis was used to determine hit and false-positive rates for absolute amplitude, three amplitude-to-noise ratios, and three conditions that combined these two parameters. SETTING: The study was performed at a tertiary care, outpatient clinical laboratory facility. PATIENTS: Subjects with normal hearing and those with sensorineural hearing loss participated in the study. MAIN OUTCOME MEASURES: Main outcome measures were hit and false-positive rates for various DPOAE measures. RESULTS: Hit and false-positive rates were better for high than low frequencies. As absolute amplitude and amplitude-to-noise ratios increased hit and false-positive rates improved. Optimal hit rates generally exceeded 80%; false-positive rates were approximately 20% in the high-frequency range. Although the absolute amplitude measures seemed more useful than various ratio measures, there were advantages to using both parameters clinically. CONCLUSIONS: DPOAEs have acceptable hit and false-positive rates for high frequencies but not for lower frequencies. DPOAE amplitude-to-noise ratios of +3 and even +6 dB may not be clinically feasible based on the current data. The overall findings obtained on the commercial instrument in this study compare favorably with previous studies of a similar nature.
OBJECTIVE: This study aimed to establish hit and false-positive rates for distortion product otoacoustic emissions (DPOAEs) using a commercial instrument. STUDY DESIGN: This was a prospective study. The examiners performing the DPOAEs were blinded to pure-tone audiometric results. A decision matrix analysis was used to determine hit and false-positive rates for absolute amplitude, three amplitude-to-noise ratios, and three conditions that combined these two parameters. SETTING: The study was performed at a tertiary care, outpatient clinical laboratory facility. PATIENTS: Subjects with normal hearing and those with sensorineural hearing loss participated in the study. MAIN OUTCOME MEASURES: Main outcome measures were hit and false-positive rates for various DPOAE measures. RESULTS: Hit and false-positive rates were better for high than low frequencies. As absolute amplitude and amplitude-to-noise ratios increased hit and false-positive rates improved. Optimal hit rates generally exceeded 80%; false-positive rates were approximately 20% in the high-frequency range. Although the absolute amplitude measures seemed more useful than various ratio measures, there were advantages to using both parameters clinically. CONCLUSIONS: DPOAEs have acceptable hit and false-positive rates for high frequencies but not for lower frequencies. DPOAE amplitude-to-noise ratios of +3 and even +6 dB may not be clinically feasible based on the current data. The overall findings obtained on the commercial instrument in this study compare favorably with previous studies of a similar nature.
Authors: Campbell P Cross; Selena Liao; Zachary D Urdang; Priya Srikanth; Angela C Garinis; Peter S Steyger Journal: Int J Pediatr Otorhinolaryngol Date: 2015-09-09 Impact factor: 1.675
Authors: Tiffany A Johnson; Stephen T Neely; Judy G Kopun; Darcia M Dierking; Hongyang Tan; Michael P Gorga Journal: Ear Hear Date: 2010-02 Impact factor: 3.570